What is DPI?

DPI ( dots on the thumb ) is the measurement of the printer resolution, although it is normally, somewhat inappropriate to monitors, scanners and even digital cameras.

For printers specification DPI indicates the number of dots per thumb that the printer is able to achieve text or graphics on the printed page. The higher the DPI, the more text or image appears. Low DPI is often used for storing ink for copies or routine paperwork. This setting can be 300 or even 150 dpi. High resolution starts at 600 DPI for standard printers and can exceed for color printers designed to turn off digital photography or other high -resolution images. The technically correct term is "PPI" or pixels on the thumb, but instead is commonly used by DPI. The 1280 x 1024 display settings on the screen of 1.3 million pixels, while the 800 x 600 settings have 480,000, or less than half the higher settings. With a smaller number of pixels will not have a picture of clarity that can be achievedOut with higher saturation. Each dot or pixel reflects a certain color and brightness. The greater the number of pixels, the more detailed the image. More pixels also require more memory and can take longer than to "paint" images, depending on the graphics card, processor and other components of the system.

scanners also work in different resolutions. The scan time will increase with higher DPI settings, as the scanner must collect and store more data. However, the larger the DPI or the desired resolution, the richer the resulting image. Setting high DPI mimics the original image in a more true way than lower DPI settings. If the image is to be enlarged, high DPI settings are required. Otherwise, enlarged Picture will look "block" or blurred because the software lacks information that fills the extra space when the image is enlarged. Instead, every pixel "blows" to "blur" through the wider area. TecAgain, the term in this application sampled PPI , but DPI is used more often.

digital cameras have their own specifications in terms of megapixels and resolution, but DPI is often mentioned in this context. Since DPI refers to the output image in all cases, a digital camera capable of the most basic current standards of the resolution --- 3.0 megapixels and better- it will issue a picture capable of using very high DPI settings on the printer. However, if your printer is only 600 dpi, another camera resolution will be lost in the print process. Therefore, when buying or upgrading components, it is essential for each product to be able to support the highest standards of any product.